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full mettallurgy
Q. Compounds of Group 16 Elements? We will now discuss some compounds like the hydrides, halides and oxides of the Group 16 elements. All elements of this group form simple
For the formation of covalent bond, the difference in the value of electron egativities should be: (1) Equal to or less than 1.7 (2) More than 1.7 (3) 1.7 or mor
Q.Briefly describe about Nitrogen? Ans. Nitrogen is a gas that makes up approximately 79% of the atmosphere. It exists in the form of the diatomic molecule N 2 . In this f
Sphere packing Element structures where chemical bonding is nondirectional are best explained by considering the packing of equal spheres. Close-packed structures are on
For principle quantum numbern= 4 the total number of orbitals having l=3: (1) 3 (2) 7 (3) 5 (4) 9 Ans: 7
MOLE CONCEPT
Raising heavy weights by water pressure Get a rubber hot-water bottle. Put a one- hole stopper carrying a short glass tube tightly in the neck. Punch a hole in the bottom of a
The maximum number of electrons in p -orbital with n= s, m=1 is: (1) 6 (2) 2 (3) 14 (4) 10 Ans: 2
I have the following reactions (1)NaOH+CO2+M=NaHCO3+M, K1 (2)NaHCO3+H=Na+H2CO3, K2 (3)2NaHCO3+M=(NaHCO3)2+M, K3 ki''s are the rate constants. Suppose NaHCO3 is a dominating constit
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